Battery Terminal Post

Product Specifications

Technical details and manufacturing context for Battery Terminal Post

Definition

A battery terminal post is a critical conductive component that serves as the electrical interface between individual battery cells or cell groups and the external circuit. It provides a secure mechanical and electrical connection point for busbars, cables, or connectors. These posts are engineered to handle high current loads while maintaining low electrical resistance and preventing corrosion. They are essential components in battery pack assembly for various applications including automotive, industrial, and energy storage systems. The terminal post is typically made from copper alloy, nickel-plated steel, or aluminum alloy, chosen for their conductivity and corrosion resistance. Key parameters include thread size (M8–M12), current rating (100–500 A), electrical resistance (0.1–0.5 mΩ at 20°C), temperature range (-40 to 85°C), torque rating (15–25 N·m), corrosion resistance (72–240 hours salt spray per ASTM B117), material grade (C11000–C12200), plating thickness (5–15 μm), tensile strength (200–400 MPa), hardness (80–120 HRB), and weight (50–150 g). These values are reference ranges and must be confirmed for the specific model and application. The terminal post is designed to withstand mechanical stress and environmental exposure, ensuring reliable performance over the battery's service life. Proper installation and maintenance are essential to prevent loosening, corrosion, or overheating. Always verify model-specific specifications and standards with the legal manufacturer or supplier before procurement.

Working Principle

The terminal post conducts electrical current from the battery cell's internal electrodes to external connections through solid metal conduction. It typically uses threaded or welded interfaces to ensure reliable electrical contact and mechanical stability. The post is designed to minimize electrical resistance and handle high current loads without excessive heating. Its material and plating are selected to resist corrosion and maintain conductivity over time. The mechanical design provides a secure attachment point for cables or busbars, ensuring a stable connection that can withstand vibration and thermal cycling.

Common Materials

Copper Alloy, Nickel-Plated Steel, Aluminum Alloy

Technical Parameters

Parameter	Typical range	Notes & selection driver
Thread SizeRequired	M8–M12 mm	Diameter and pitch of mounting threadsISO 262
Current RatingRequired	100–500 A	Maximum continuous current capacityIEC 60417
Electrical ResistanceRequired	0.1–0.5 mΩ	DC resistance at 20°CIEC 60468
Temperature RangeRequired	-40–85 °C	Operating temperature limitsIEC 60068-2-1
Torque RatingRequired	15–25 N·m	Maximum tightening torque for connectionsISO 898-1
Corrosion Resistance	72–240 hours	Salt spray test duration per ASTM B117ASTM B117
Material	C11000–C12200	Copper alloys for conductivity and corrosion resistance.ASTM B152
Plating Thickness	5–15 μm	Tin or nickel plating for solderability and corrosion protection.ASTM B456
Tensile Strength	200–400 MPa	Mechanical strength of terminal post material.ASTM E8
Hardness	80–120 HRB	Rockwell B hardness for durability.ASTM E18
Weight	50–150 g	Typical weight for automotive terminal posts.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Post Body Part
Primary conductive element and structural support

Material: Copper alloy or aluminum alloy
Threaded Section Part
Provides mechanical attachment for connectors

Material: Same as post body with possible plating
Base Flange Optional Part
Distributes mechanical load and provides welding surface

Material: Same as post body
Protective Coating Optional Part
Prevents corrosion and oxidation

Material: Nickel plating or anti-corrosion coating

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Battery Terminal Post.

Manufacturers of Battery Terminal Post

Manufacturer profiles associated with Battery Terminal Post.

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Frequently Asked Questions

What materials are commonly used for battery terminal posts?

Common materials include copper alloy, nickel-plated steel, and aluminum alloy. These are selected for their electrical conductivity and corrosion resistance. Specific grades, such as C11000–C12200 for copper, are reference ranges and must be confirmed for the intended application.

What is the typical current rating for a battery terminal post?

The reference range for maximum continuous current capacity is 100–500 A, but this depends on the post's design, material, and size. Always verify the current rating for the specific model with the manufacturer.

How is corrosion resistance tested for battery terminal posts?

Corrosion resistance is often evaluated using a salt spray test per ASTM B117, with durations ranging from 72 to 240 hours. This is a reference range; the actual requirement depends on the application environment.

What standards apply to battery terminal posts?

Relevant standards include ISO 262 for thread sizes, IEC 60417 for current rating symbols, IEC 60468 for resistance, IEC 60068-2-1 for temperature, ISO 898-1 for torque, ASTM B117 for corrosion, ASTM B152 for material, ASTM B456 for plating, ASTM E8 for tensile strength, and ASTM E18 for hardness. These are verification references, not proof of compliance.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Atmospheric to 1.5 bar
temperature:	-40°C to 125°C
current capacity:	Up to 500A continuous
corrosion resistance:	Salt spray 500 hours per ASTM B117
vibration resistance:	Up to 10G RMS

Product Specifications

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